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| author | Robert Haas <rhaas@postgresql.org> | 2011-02-07 22:04:29 -0500 |
|---|---|---|
| committer | Robert Haas <rhaas@postgresql.org> | 2011-02-07 22:04:29 -0500 |
| commit | 32896c40ca766146312b28a5a0eb3f66ca0300ed (patch) | |
| tree | 88596b8de0a3d0f57beaf994ff8ace6eda6fd9ba /doc/src/sgml/array.sgml | |
| parent | 47082fa875179ae629edb26807ab3f38a775280b (diff) | |
Avoid having autovacuum workers wait for relation locks.
Waiting for relation locks can lead to starvation - it pins down an
autovacuum worker for as long as the lock is held. But if we're doing
an anti-wraparound vacuum, then we still wait; maintenance can no longer
be put off.
To assist with troubleshooting, if log_autovacuum_min_duration >= 0,
we log whenever an autovacuum or autoanalyze is skipped for this reason.
Per a gripe by Josh Berkus, and ensuing discussion.
Diffstat (limited to 'doc/src/sgml/array.sgml')
0 files changed, 0 insertions, 0 deletions